Home / 72,771,372.30-109,157,058.45-66,819,233.10

Finding the Fourth Proportional to 72,771,372.30, 109,157,058.45 and 66,819,233.10

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Solution

The fourth proportional to 72,771,372.30, 109,157,058.45 and 66,819,233.10 is: 100,228,849.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,771,372.30 : 109,157,058.45 = 66,819,233.10 : x
  2. Step 2: Convert to fraction form
    72,771,372.30/109,157,058.45 = 66,819,233.10/x
  3. Step 3: Cross multiply
    72,771,372.30x = 109,157,058.45 × 66,819,233.10
  4. Step 4: Simplify right side
    72,771,372.30x = 7,293,790,933,080,875
  5. Step 5: Solve for x
    x = 7,293,790,933,080,875/72,771,372.30
  6. Step 6: Final answer
    x = 100,228,849.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.